Finding the Fourth Proportional to 10,861.31, 16,260.98 and 7,152.23

Step by Step Solution

1. Step 1: Write the proportion equation
   10,861.31 : 16,260.98 = 7,152.23 : x
2. Step 2: Convert to fraction form
   10,861.31/16,260.98 = 7,152.23/x
3. Step 3: Cross multiply
   10,861.31x = 16,260.98 × 7,152.23
4. Step 4: Simplify right side
   10,861.31x = 116,302,273.88
5. Step 5: Solve for x
   x = 116,302,273.88/10,861.31
6. Step 6: Final answer
   x = 10,707.94